I have been wondering- I have a few friends who are working on projects and want me to help them by starting (and maybe managing <_< ) their Wiki(a) page(s). They said, among other things, I could "have a large part of the Wikia (ad?) revenue.

Now, I'm definitely the most-techie inclined person, but unless the brain has failed, I don't think wikia pays the "owner" of a wiki a percentage of ad revenue- is that correct, is it wrong?

Essentially, does Wikia pay a percentage of their ad fee to the owner? Or are there (viable) alternatives to Wikia for a profit-gaining wiki?